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Finding the Third Proportional to 231 and 328.88

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Solution

The third proportional to 231 and 328.88 is: 468.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    231 : 328.88 = 328.88 : x
  2. Step 2: Convert to fraction form
    231/328.88 = 328.88/x
  3. Step 3: Cross multiply
    231x = 328.88 × 328.88
  4. Step 4: Simplify right side
    231x = 108,158.77
  5. Step 5: Solve for x
    x = 108,158.77/231
  6. Step 6: Final answer
    x = 468.22

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.